ADS1226

ADS1225 ¨ ADS1226 ¨ ADS1225 ADS1226 www.ti.com ....................................................................................................................................................... SBAS346C – MAY 2006 – REVISED JANUARY 2009 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator FEATURES 1 2 100SPS Data Rate (High-Speed Mode) Single-Cycle Settling Easy Conversion Control with START Pin Automatic Shutdown Low Noise: 4µVRMS Noise (High-Resolution Mode) Input Multiplexer with Two Differential Channels (ADS1226) Voltage Reference Supports Ratiometric Measurements Self-Calibrating Simple Read-Only 2-Wire Serial Interface Internal High-Impedance Input Buffer Internal Temperature Sensor Internal Oscillator Low-Power: 1mW While Operating, < 1µA During Shutdown Analog and Digital Supplies: 2.7V to 5.5V APPLICATIONS Hand-Held Instrumentation Portable Medical Equipment Industrial Process Control TEMPEN AVDD DESCRIPTION The ADS1225 and ADS1226 are 24-bit delta-sigma analog-to-digital (A/D) converters. They offer excellent performance, ease-of-use, and low power in a small 4mm × 4mm QFN package and are well-suited for demanding high-resolution measurements, especially in portable and other space-saving and power-constrained applications. The ADS1225 and ADS1226 convert on command using a dedicated START pin. Simply pulse this pin to initiate a conversion. Data is read in a single cyc...